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Archean Eon
see definition of archean eonSynonyms of archean eon
1. (noun) the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life
Words Derivationally Related to archean eon
1. (noun) the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life